/Engine/Source/Runtime/HeadMountedDisplay/Public/IIdentifiableXRDevice.h
Additionally, it can be used to tie variousIModularFeaturedevice interfaces together. For example, if you have separateIXRTrackingSystemandIXRSystemAssetsinterfaces which both reference the same devices, then this base class gives you a way to communicate between the two.
class IIdentifiableXRDevice : public [IXRSystemIdentifier](API\Runtime\HeadMountedDisplay\IXRSystemIdentifier)